Retail display rack



FIG. 1 is a top, front, and right side perspective view of a retail display rack showing my new design, the broken line disclosure of a tennis rack being for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a top elevational view thereof;

FIG. 3 is a bottom elevational view thereof;

FIG. 4 is a side elevational view thereof, the opposite side being a mirror image thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a back elevational view thereof. 

The ornamental design for a retail display rack, as shown and described. 